Huawei is wasting no time and has started work on porting the new Android O to its premier phablet, the Huawei Mate 9. It's early in the development stage, but some unique O features like picture in picture are already working. A ROM was unearthed by an XDA senior member, who provided the first glimpse of what's to come. The EMUI version is 5.1 - a tenth higher than the last update, but the Huawei P10 is already on v5.1 so this is likely not the final version of Huawei's custom skin. Huawei Mate 9 running a test version of Android O The picture in picture feature The ROM...
Source: http://www.gsmarena.com/huawei_mate_9_already_running_a_test_version_of_android_o-news-24499.php